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Attenuated Total Reflectance Fourier Transform Infrared (ATR-FTIR) spectroscopy was used to examine the impact of hydrogen bonding on the reactive amine and hydroxyl groups of chitosan. Measurements were performed on powder and film samples hydrated under different conditions. To resolve the individual OH and NH bands that overlap in the region between 3000 and 3800 cm−1, the spectra were deconvoluted...
The acoustic properties at 10 and 30MHz of dry and wet boron oxide samples have been investigated over the temperature range between 10 and 300K. Significant differences in the temperature dependence of acoustic attenuation and longitudinal sound velocity as a function of the annealing treatment and water content have been revealed in the investigated glasses. Measurements, densely performed over...
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